Clarify pyexpat documentation in StartElementHandler
diff --git a/Doc/library/pyexpat.rst b/Doc/library/pyexpat.rst
index 420e407..e3b7917 100644
--- a/Doc/library/pyexpat.rst
+++ b/Doc/library/pyexpat.rst
@@ -339,8 +339,10 @@
.. method:: xmlparser.StartElementHandler(name, attributes)
Called for the start of every element. *name* is a string containing the
- element name, and *attributes* is a dictionary mapping attribute names to their
- values.
+ element name, and *attributes* is the element attributes. If
+ :attr:`ordered_attributes` is true, this is a list (see
+ :attr:`ordered_attributes` for a full description). Otherwise it's a
+ dictionary mapping names to values.
.. method:: xmlparser.EndElementHandler(name)